CN106749376A - The linear polysiloxane composition and preparation method of different rate of volatilizations - Google Patents
The linear polysiloxane composition and preparation method of different rate of volatilizations Download PDFInfo
- Publication number
- CN106749376A CN106749376A CN201611237557.2A CN201611237557A CN106749376A CN 106749376 A CN106749376 A CN 106749376A CN 201611237557 A CN201611237557 A CN 201611237557A CN 106749376 A CN106749376 A CN 106749376A
- Authority
- CN
- China
- Prior art keywords
- linear polysiloxane
- composition
- volatilizations
- purity
- different rate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- -1 polysiloxane Polymers 0.000 title claims abstract description 68
- 229920001296 polysiloxane Polymers 0.000 title claims abstract description 64
- 239000000203 mixture Substances 0.000 title claims abstract description 56
- 238000002360 preparation method Methods 0.000 title claims description 10
- 239000002994 raw material Substances 0.000 claims abstract description 8
- 239000002253 acid Substances 0.000 claims abstract description 3
- 238000006243 chemical reaction Methods 0.000 claims abstract description 3
- UQEAIHBTYFGYIE-UHFFFAOYSA-N hexamethyldisiloxane Chemical compound C[Si](C)(C)O[Si](C)(C)C UQEAIHBTYFGYIE-UHFFFAOYSA-N 0.000 claims abstract description 3
- 238000000926 separation method Methods 0.000 claims description 5
- 230000006837 decompression Effects 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- HMMGMWAXVFQUOA-UHFFFAOYSA-N octamethylcyclotetrasiloxane Chemical compound C[Si]1(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O1 HMMGMWAXVFQUOA-UHFFFAOYSA-N 0.000 claims description 3
- 230000033228 biological regulation Effects 0.000 claims description 2
- HTDJPCNNEPUOOQ-UHFFFAOYSA-N hexamethylcyclotrisiloxane Chemical compound C[Si]1(C)O[Si](C)(C)O[Si](C)(C)O1 HTDJPCNNEPUOOQ-UHFFFAOYSA-N 0.000 claims description 2
- 238000003756 stirring Methods 0.000 claims 2
- 238000001311 chemical methods and process Methods 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 abstract description 2
- 239000002537 cosmetic Substances 0.000 description 7
- 238000001514 detection method Methods 0.000 description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- XMSXQFUHVRWGNA-UHFFFAOYSA-N Decamethylcyclopentasiloxane Chemical compound C[Si]1(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O1 XMSXQFUHVRWGNA-UHFFFAOYSA-N 0.000 description 3
- 239000004615 ingredient Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000005138 cryopreservation Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 150000001335 aliphatic alkanes Chemical class 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000009965 odorless effect Effects 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 230000035807 sensation Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229920005573 silicon-containing polymer Polymers 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 230000009967 tasteless effect Effects 0.000 description 1
- 239000006097 ultraviolet radiation absorber Substances 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
- A61K8/58—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing atoms other than carbon, hydrogen, halogen, oxygen, nitrogen, sulfur or phosphorus
- A61K8/585—Organosilicon compounds
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
- A61Q19/00—Preparations for care of the skin
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F7/00—Compounds containing elements of Groups 4 or 14 of the Periodic Table
- C07F7/02—Silicon compounds
- C07F7/08—Compounds having one or more C—Si linkages
- C07F7/0834—Compounds having one or more O-Si linkage
- C07F7/0838—Compounds with one or more Si-O-Si sequences
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F7/00—Compounds containing elements of Groups 4 or 14 of the Periodic Table
- C07F7/02—Silicon compounds
- C07F7/08—Compounds having one or more C—Si linkages
- C07F7/0834—Compounds having one or more O-Si linkage
- C07F7/0838—Compounds with one or more Si-O-Si sequences
- C07F7/0872—Preparation and treatment thereof
- C07F7/0874—Reactions involving a bond of the Si-O-Si linkage
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F7/00—Compounds containing elements of Groups 4 or 14 of the Periodic Table
- C07F7/02—Silicon compounds
- C07F7/08—Compounds having one or more C—Si linkages
- C07F7/20—Purification, separation
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K2800/00—Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
- A61K2800/10—General cosmetic use
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Birds (AREA)
- Epidemiology (AREA)
- Dermatology (AREA)
Abstract
The invention belongs to chemical process technical field, more particularly to the linear polysiloxane composition with different rate of volatilizations, the present invention is with organosilicon mixture as raw material, obtained with volatile high-purity linear polysiloxane by complicated separating technology, the organosilicon mixture by organosilicon ring and HMDO in acid condition balanced reaction and obtain.The present invention is with two kinds or the combination of two or more high-purity linear polysiloxanes obtains the linear polysiloxane composition of different rate of volatilizations, and the composition rate of volatilization has controllability, widens its application field.
Description
Technical field
The invention belongs to chemical process technical field, more particularly to a kind of linear polysiloxane with different rate of volatilizations
And preparation method thereof.
Background technology
Dimethyl silicone polymer is used frequently as cosmetics because of the boiling characteristics of its good disperse properties and uniqueness
Volatile ingredient.It is limpid, tasteless, substantially odorless, without greasy feeling.With other volatility used in personal care industries
Unlike carrier, this volatile organosilicon oil will not be made due to the relatively low reason of its volatilization temperature in evaporation
Skin cools off.
Cyclic polysiloxanes are the volatile ingredients of usually used cosmetics, including such as octamethylcy-clotetrasiloxane
(D4), the analog such as decamethylcyclopentasiloxane (D5) and the siloxanes of ten diformazan basic ring six (D6).Although however, D4 show it is excellent
Good volatility, but because the freezing point of D4 only has 17~18 DEG C, easily crystallization, causes cryopreservation to include D4 at low ambient temperatures
Cosmetics in the case of, influence is used.And D5 has no problem in terms of cryopreservation stability, but its volatility is not strong, and
Due to the reason so that the sense of touch during the cosmetics use comprising D5 is thick and heavy, shows viscosity, it is impossible to which acquisition uses process
In good feel problem.Corresponding, the volatility of D6 is weaker, and the thick and heavy sense during use is stronger.
In view of above mentioned problem, WO01/15658 proposes a kind of structure for [(CH3)3SiO]3SiCH3The poly- trimethyl of methyl
Siloxanes, it can be as volatile ingredient in cosmetics.Although however, being blended organic poly- described in WO01/15658
The cosmetics of siloxanes show good volatility, but it fails to sufficiently improve the sense of touch during use, and especially, not
Can fully avoid drying the problem of sensation.Accordingly, it would be desirable to the further improvement on above mentioned problem.
A kind of new organopolysiloxane with ad hoc structure is provided in CN102639542A and comprising above-mentioned organic
The cosmetics of polysiloxanes.Point out that this new organopolysiloxane is volatile in patent, with low-temperature stability, there is provided
Excellent glossiness, and with the premium properties with the miscibility of ultra-violet absorber, and the organopolysiloxane conduct
The sub of octamethylcy-clotetrasiloxane, decamethylcyclopentasiloxane or the poly- trimethicone of methyl is useful.But synthesis
Complex process, process is difficult to control, and is not suitable for industrialized production.
The linear polysiloxane of corresponding low polymerization degree has less viscosity, excellent volatility and low-temperature storage stabilization
Property etc..The preparation method to the linear poly- silica of the high-purity with different rate of volatilizations and combinations thereof not yet has related report at present
Road.
The content of the invention
It is an object of the invention to provide the linear polysiloxane composition with different rate of volatilizations.It is of the invention another
Purpose is to provide the preparation method of the linear polysiloxane with different rate of volatilizations.
Linear polysiloxane composition with different rate of volatilizations of the present invention, further technical scheme is institute
It is a kind of linear polydimethylsiloxane- to state linear polysiloxane, with following (I) formula structural formula：
(I) the corresponding structure of formula is abbreviated as MDmM, wherein, m is 1~6 integer.
The composition is made up of two or more linear polysiloxane, and linear polysiloxane is described in composition
The linear polysiloxane of high-purity.
Linear polysiloxane composition with different rate of volatilizations of the invention, its further technical scheme can be with
It is that the composition is stirred at normal temperatures and pressures with arbitrary proportion by the linear polysiloxane of two or more high-purity
It is obtained by mixing.
Linear polysiloxane composition with different rate of volatilizations of the invention, its further technical scheme can be with
It is that the linear polysiloxane of the high-purity refers to the material that purity is 99%~100% after testing.
Linear polysiloxane composition with different rate of volatilizations of the invention, its further technical scheme can be with
It is that the rate of volatilization is measured according to DIN chemistry meeting DIN53170-2009 standards.
The linear polysiloxane of high-purity of the present invention has volatility.
Present invention also offers a kind of linear polysiloxane preparation method of the high-purity：Comprise the following steps, raw material
By normal pressure, decompression separation technique, the linear polysiloxane with different rate of volatilizations with high-purity is obtained；
The preparation method of the linear polysiloxane with different rate of volatilizations of the invention, its further technical scheme is also
Can be that described raw material is organosilicon mixture, come from organosilicon ring with HMDO in acid condition
Balanced reaction and obtain, further described organosilicon ring is hexamethyl cyclotrisiloxane (D3), the silica of prestox ring four
Alkane (D4), decamethylcyclopentaandoxane (D5), one or more mixture of the siloxanes of ten diformazan basic ring six (D6).
Linear polysiloxane composition with different rate of volatilizations of the invention, its further technical scheme can be with
The rate of volatilization for being described composition is adjustable, preferably by the ratio of each component in regulation composition.
According to another aspect of the present invention, the invention provides a kind of linear polysiloxane combination of different rate of volatilizations
The preparation method of thing, comprises the following steps：
1) the corresponding height of (1) formula in claim 1 is prepared by normal pressure, decompression separation by raw material of organosilicon mixture
The linear polysiloxane of purity；
2) two or more step 1) the linear polysiloxane of high-purity stirred at normal temperatures and pressures with arbitrary proportion
Mix mixing
The present invention has advantage following prominent and good effect：
The linear polysiloxane composition that the present invention is provided has different rate of volatilizations, can be used as a kind of volatility silicon
Oil, and its rate of volatilization has controllability, widens its application field.
Brief description of the drawings
Fig. 1 is the rate of volatilization of the linear polysiloxane of different structure prepared by the present invention；
Fig. 2 is the rate of volatilization of the linear polysiloxane composition of different structure prepared by the present invention.
Specific embodiment
To make the object, technical solutions and advantages of the present invention of greater clarity, with reference to specific embodiment, to this
Invention is further described.It should be understood that these descriptions are merely illustrative, and it is not intended to limit the scope of the present invention.
Embodiment 1
Organosilicon mixture enter rectifying column in, under the conditions of certain vacuum, raw material be heated vaporization after, steam Ta Nei with
The liquid of overhead condenser backflow carries out gas-liquid mass transfer on filler surface, carries out rectifying separation；Rectifying column tower top obtains gas phase, warp
Condenser is condensed, and by adjusting reflux ratio, the qualified material of extraction purity obtains the line of different structure through pipeline to storage tank
Property polysiloxanes.
(1) MDM for obtaining, is 99.86% through gas chromatographic detection purity.
(2) MD for obtaining2M, is 99.88% through gas chromatographic detection purity.
(3) MD for obtaining3M, is 99.92% through gas chromatographic detection purity.
(4) MD for obtaining4M, is 99.78% through gas chromatographic detection purity.
(5) MD for obtaining5M, is 99.57% through gas chromatographic detection purity.
(6) MD for obtaining6M, is 99.81% through gas chromatographic detection purity.
Embodiment 2
The linear of high-purity obtained in case study on implementation 1 is gathered according to DIN chemistry meeting DIN53170-2009 standards
Siloxanes (m=1~6) measures rate of volatilization, as a result as shown in Figure 1：
The linear polysiloxane MDM, MD of the high-purity to obtaining2M, MD3M, MD4M, MD5M, MD6M carries out rate of volatilization survey
Amount, as a result finds, the rate of volatilization of the linear polysiloxane of different structure is MDM>MD2M>MD3M>MD4M>MD5M>MD6M, with
The chain link of linear polysiloxane gradually increases, and its rate of volatilization slows down gradually.
Case study on implementation 3
The volatilization of composition prepared by the linear polysiloxane (m=1~6) according to the high-purity obtained in case study on implementation 1
Speed is as shown in Figure 2：Wherein
Composition 1：According to weight ratio, MDM50%, MD2M50%.
Composition 2：According to weight ratio, MDM60%, MD3M40%.
Composition 3：According to weight ratio, MDM60%, MD2M38%, MD3M2%.
Composition 4：According to weight ratio, MDM52%, MD2M35%, MD3M13%.
Composition 5：According to weight ratio, MDM40%, MD3M40%, MD4M15%, MD5M5%.
Composition 6：According to weight ratio, MDM24%, MD3M38%, MD5M6%, MD6M32%.
Composition 7：According to weight ratio, MDM14%, MD3M46%, MD5M5%, MD6M35%.
Rate of volatilization measurement is carried out to 7 kinds of linear polysiloxane compositions of various combination, is as a result found, composition
Rate of volatilization can be to be adjusted according to the ratio of each component in composition.Wherein, the chain link of linear polysiloxane is shorter, its
Rate of volatilization is faster, its in the composition proportion it is bigger, rate of volatilization is faster；Conversely, its proportion in the composition
Fewer, rate of volatilization is slower.The chain link of linear polysiloxane is more long, and its rate of volatilization is slower, its proportion in the composition
Smaller, rate of volatilization is faster；Conversely, its in the composition proportion it is bigger, rate of volatilization is slower.
Although embodiments of the present invention are described in detail, it should be understood that, without departing from of the invention
In the case of spirit and scope, embodiments of the present invention can be made with various changes, replace and change.
Claims (8)
1. a kind of linear polysiloxane composition with different rate of volatilizations, the linear polysiloxane is that structural formula is (I)
Shown linear polydimethylsiloxane-：
The wherein corresponding structure of (I) formula is abbreviated as MDmM, wherein, m is 1~6 integer；
The composition is made up of two or more linear polysiloxane, and linear polysiloxane described in composition is high-purity
The linear polysiloxane of degree.
2. the linear polysiloxane composition with different rate of volatilizations according to claim 1, it is characterised in that：It is described
Composition be by the linear polysiloxane of two or more high-purity with arbitrary proportion at normal temperatures and pressures stir mixing and
.
3. the linear polysiloxane composition with different rate of volatilizations according to claim 1, it is characterised in that：It is described
The linear polysiloxane of high-purity refers to the material that purity is 99%~100% after testing.
4. the linear polysiloxane composition with different rate of volatilizations according to claim 1, it is characterised in that：It is described
Rate of volatilization is measured according to DIN chemistry meeting DIN53170-2009 standards.
5. the linear polysiloxane composition with different rate of volatilizations according to claim 1, it is characterised in that：It is described
The linear polysiloxane of high-purity has volatility.
6. the linear polysiloxane composition with different rate of volatilizations according to claim 1, it is characterised in that：It is described
The linear polysiloxane of high-purity is prepared by following preparation methods：Comprise the following steps, raw material is by normal pressure, decompression separation work
Skill, obtains the linear polysiloxane with different rate of volatilizations with high-purity；
Described raw material is organosilicon mixture, and the organosilicon mixture is existed by organosilicon ring and HMDO
Balanced reaction under acid condition and obtain；Described organosilicon ring be hexamethyl cyclotrisiloxane, octamethylcy-clotetrasiloxane,
One or more of decamethylcyclopentaandoxane, the siloxanes of ten diformazan basic ring six.
7. the linear polysiloxane composition with different rate of volatilizations according to claim any one of 1-6, its feature
It is：The rate of volatilization of the composition is adjustable, and rate of volatilization is by linear polysiloxane component in regulation composition
Realized with ratio.
8. the preparation method of the linear polysiloxane composition with different rate of volatilizations described in a kind of claim 1, including
Following steps：
1) the corresponding high-purity of (1) formula in claim 1 is prepared by normal pressure, decompression separation by raw material of organosilicon mixture
Linear polysiloxane；
2) two or more step 1) the linear polysiloxane of high-purity stir mixed at normal temperatures and pressures with arbitrary proportion
Close.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611237557.2A CN106749376A (en) | 2016-12-28 | 2016-12-28 | The linear polysiloxane composition and preparation method of different rate of volatilizations |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611237557.2A CN106749376A (en) | 2016-12-28 | 2016-12-28 | The linear polysiloxane composition and preparation method of different rate of volatilizations |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106749376A true CN106749376A (en) | 2017-05-31 |
Family
ID=58925036
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611237557.2A Pending CN106749376A (en) | 2016-12-28 | 2016-12-28 | The linear polysiloxane composition and preparation method of different rate of volatilizations |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106749376A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113522361A (en) * | 2020-04-22 | 2021-10-22 | 江西蓝星星火有机硅有限公司 | Immobilized catalyst for purifying cyclosiloxane |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5059578A (en) * | 1973-10-02 | 1975-05-22 | ||
| CN1051671A (en) * | 1989-10-11 | 1991-05-29 | 理查森-维克斯有限公司 | Improved facial cleansing compositions |
| CN1169109A (en) * | 1994-12-15 | 1997-12-31 | 埃斯蒂劳德公司 | Stable water-in-oil emulsion system |
| CN1247868A (en) * | 1998-08-20 | 2000-03-22 | 瓦克化学有限公司 | Volatile linear siloxanes mixture |
-
2016
- 2016-12-28 CN CN201611237557.2A patent/CN106749376A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5059578A (en) * | 1973-10-02 | 1975-05-22 | ||
| CN1051671A (en) * | 1989-10-11 | 1991-05-29 | 理查森-维克斯有限公司 | Improved facial cleansing compositions |
| CN1169109A (en) * | 1994-12-15 | 1997-12-31 | 埃斯蒂劳德公司 | Stable water-in-oil emulsion system |
| CN1247868A (en) * | 1998-08-20 | 2000-03-22 | 瓦克化学有限公司 | Volatile linear siloxanes mixture |
Non-Patent Citations (1)
| Title |
|---|
| JULIAN CHOJNOWSKI ET AL.: "Cationic Polymerization of Siloxanes Kinetically Controlled Oligomerization in Hexamethyl-cyclotrisiloxane-Linear Dimethylsiloxane Systems", 《MAKROMOL. CHEM.》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113522361A (en) * | 2020-04-22 | 2021-10-22 | 江西蓝星星火有机硅有限公司 | Immobilized catalyst for purifying cyclosiloxane |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP6526821B2 (en) | Branched organosiloxanes used as heat transfer fluids | |
| Kavitha et al. | Temperature dependence measurements and molecular interactions for ammonium ionic liquid with N-methyl-2-pyrrolidone | |
| Živković et al. | Volumetric and viscometric behavior of the binary systems ethyl lactate+ 1, 2-propanediol,+ 1, 3-propanediol,+ tetrahydrofuran and+ tetraethylene glycol dimethyl ether. New UNIFAC–VISCO and ASOG–VISCO parameters determination | |
| CN106243720A (en) | Heat-conductive silicone putty compositions | |
| CN104650598B (en) | A kind of bi-component organic silicon plasticine | |
| US9862869B2 (en) | Siloxane mixtures | |
| CN104098916A (en) | Addition type ultra-soft silicone rubber, as well as preparation method and application thereof | |
| CN105411866B (en) | It is a kind of to stablize low viscosity Water-In-Oil BB frosts and preparation method thereof using anion emulsifier | |
| CN106749376A (en) | The linear polysiloxane composition and preparation method of different rate of volatilizations | |
| CN103642046B (en) | A kind of preparation method of end-vinyl fluorosilicon oil | |
| US7612222B2 (en) | Method for the redistribution of polyorganosiloxanes | |
| US6942820B2 (en) | Dimethylpolysiloxane composition | |
| CN101942096B (en) | Modified amino silicone oil and preparation method thereof | |
| CN103349846B (en) | Device for rectifying and purifying decamethyl cyclopenta siloxane through organosilicon high boiling point compound and purifying process | |
| JP2019533733A (en) | Continuous production method of low alkoxy branched siloxane | |
| CN108676604A (en) | A kind of phenyl-fluoride silicon grease and preparation method thereof | |
| CN105273409B (en) | One kind is used for LED glass Explosion-proof globe silica-gel compositions | |
| CN106279697B (en) | A kind of low viscosity vinyl silicone oil and preparation method thereof | |
| CN104292253B (en) | The preparation method of alkyl cyclosiloxane | |
| JP4493007B2 (en) | Dimethylpolysiloxane composition | |
| Dzida et al. | Speed of sound, density, and heat capacity for (2-methyl-2-butanol+ heptane) at pressures up to 100 MPa and temperatures from (293 to 318) K. Experimental results and theoretical investigations | |
| CN103524740A (en) | Preparation method of methyl phenyl hydroxyl silicone oil with low tetracyclic compound content | |
| CN104927057A (en) | Organic silicon feeling agent and preparation method thereof | |
| Ćwiklińska et al. | Viscosities of binary mixtures of some n-ethoxyethanols with ethyl tert-butyl ether at T=(293.15, 298.15, and 303.15) K | |
| EP4087894B1 (en) | Branched polysiloxanes and methods for their preparation and use as heat transfer fluids |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170531 |